Reamer device with stone-proof ring

Abstract

The utility model relates to a reamer device with a stone-proof ring. A combined stone-proof ring composed of an outer stone-proof ring and an inner stone-proof ring is installed in the inner wall, and the inner stone-proof ring is located on the inner side of the outer stone-proof ring. The outer stone-proof ring comprises an outer ring outer ring, an outer ring middle ring and an outer ring inner ring which are connected into a whole through a plurality of outer ring connecting rods, a plurality of outer ring mounting plates are arranged on the outer side of the outer ring outer ring, and the outer ring mounting plates are detachably connected with the reamer ring; the inner stone-proof ring comprises an inner ring and an outer ring, the inner ring and the inner ring are connected into a whole through a plurality of inner ring connecting rods, a plurality of inner ring mounting plates are arranged on the outer side of the inner ring and the outer ring, and the inner ring mounting plates are detachably connected with the reamer ring. The cutter suction dredger is reasonable in structural design, adjustable in aperture size and easy to repair and maintain, the application convenience during construction in different water areas and the operation convenience of repair and maintenance are improved, and the construction interest rate of the cutter suction dredger is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of cutter suction dredgers, and particularly relates to a cutter head device with an anti-rock ring. Background Technology

[0002] Cutter suction dredgers are used for dredging ports and waterways. They use a rotating cutter head to excavate the bottom mud, and the resulting slurry is pumped ashore. During dredging operations, some waterways are affected by local geological and hydrological conditions, resulting in a large amount of rocks and sand on the bottom, with hard and sticky sediment. The cutter head can suck these rocks into the discharge pipe, which can then be transported to the dredging pump on the cutter suction dredger, causing blockages. Once a blockage occurs, work must be stopped immediately for pump removal. Furthermore, rocks entering the discharge pipe also pose a risk of blockage. As the discharge pipe length increases, accurately locating the blockage becomes extremely difficult, requiring significant manpower and disrupting normal operations, greatly impacting dredging efficiency.

[0003] Installing anti-stone ring components on the cutter head unit will help alleviate or even solve the aforementioned pump and pipe blockage problems. The anti-stone rings can be used as a filter screen to prevent stones larger than a certain diameter from entering the sludge discharge pipe and pump during operation. However, it's conceivable that installing anti-stone ring components on the cutter head unit will create additional resistance to sludge flow, reducing sludge throughput to some extent.

[0004] Existing rock-prevention ring assemblies are typically fixed structures, constructed from metal bars such as thick steel reinforcement, and directly welded to the inside of the cutter suction dredger. This type of rock-prevention ring cutter dredger has the following problems: First, the aperture of the rock-prevention ring cannot be adjusted, meaning it will be ineffective when the cutter suction dredger is used in waters with small rocks. Second, the rock-prevention ring assembly cannot be detached from the cutter suction dredger; when excessive wear or deformation due to rock impact occurs, repairs can only be done by cutting or welding, severely impacting the efficiency of the cutter suction dredger. Therefore, a new type of cutter suction dredger with a rock-prevention ring needs to be designed to solve the aforementioned technical problems. Utility Model Content

[0005] The purpose of this utility model is to provide a cutter head device with an anti-rock ring that has a reasonable structural design, adjustable orifice size, and is easy to repair and maintain, thereby improving the ease of application and maintenance in different water areas and increasing the efficiency of cutter suction dredgers.

[0006] The technical solution adopted by this utility model is as follows: a reamer device with a stone-proof ring, comprising a reamer ring and a reamer bushing, with multiple spiral reamer arms arranged at equal angular intervals around the two. Multiple blade ring tooth assemblies are installed on the outer side of the reamer ring, and blade arm tooth assemblies are installed on the side edges of each reamer arm. A combined stone-proof ring consisting of an outer stone-proof ring and an inner stone-proof ring is installed in the space inside each reamer arm, with the inner stone-proof ring located inside the outer stone-proof ring. The outer stone-proof ring includes an outer ring, an inner ring, and an inner ring, and each ring is connected as a whole by multiple outer ring connecting rods. Multiple outer ring mounting plates are provided on the outer side of the outer ring, and the outer ring mounting plates are detachably connected to the reamer ring. The inner stone-proof ring includes an outer ring and an inner ring, and the two rings are connected as a whole by multiple inner ring connecting rods. Multiple inner ring mounting plates are provided on the outer side of the outer ring, and the inner ring mounting plates are detachably connected to the reamer ring.

[0007] Preferably, the outer anti-stone ring further includes an outer ring sleeve located at the center, the inner diameter of the outer ring sleeve being equal to the outer diameter of the auger shaft sleeve and the outer ring sleeve being fitted onto the auger shaft sleeve; the inner diameter of the inner ring of the inner anti-stone ring is equal to the outer diameter of the outer ring sleeve and the inner ring being fitted onto the outer ring sleeve.

[0008] Preferably, the outer end of the outer ring connecting rod is welded to the outer outer ring, the middle part is welded to the middle ring and the inner ring of the outer ring, and the inner end is welded to the outer ring sleeve; the outer end of the inner ring connecting rod is welded to the outer outer ring, and the inner end is welded to the inner inner ring.

[0009] Preferably, the outer ring mounting plates are provided with six plates spaced at equal angles around the circumference. The inner edge of the outer ring mounting plates is welded to the outer ring. The outer ring mounting plates have connecting holes and are fixedly connected to the reamer ring with bolts. The inner ring mounting plates are provided with six plates spaced at equal angles around the circumference. The inner edge of the inner ring mounting plates is welded to the outer ring. The inner ring mounting plates have connecting holes and are fixedly connected to the reamer ring with bolts.

[0010] Preferably, the outer ring connecting rods are provided with six rods spaced at equal angular intervals in the circumferential direction; the inner ring connecting rods are provided with six rods spaced at equal angular intervals in the circumferential direction.

[0011] Preferably, the cutter ring tooth assembly includes a tooth base and cutter teeth mounted on the tooth base, and the tooth base is welded to the reamer ring; the cutter arm tooth assembly includes a tooth base and cutter teeth mounted on the tooth base, and the tooth base is welded to the reamer arm.

[0012] The advantages and positive effects of this utility model are:

[0013] This invention provides a cutterhead device with a reasonable structural design and an anti-stone ring. Compared with existing cutterhead devices, the cutterhead device of this invention has a combined anti-stone ring consisting of an outer anti-stone ring and an inner anti-stone ring inside, which is used to prevent oversized stones from entering the suction port and causing pump and pipe blockage problems. Since both the outer and inner anti-stone rings are detachably connected to the cutterhead ring, when the combined anti-stone ring suffers excessive wear or deformation due to stone collisions, it can be easily disassembled and maintained. Because cutting and welding processes are avoided, the efficiency of cutterhead device repair and maintenance is significantly improved, thereby increasing the operational efficiency of the cutter suction dredger.

[0014] The combined stone-blocking ring of this invention can adjust the size of the through-hole by adjusting the relative angle between the inner and outer stone-blocking rings. This allows for the reduction of the through-hole when smaller stones need to be blocked, and the increase of the through-hole when smaller stones do not need to be blocked, thus improving the passage of mud. It is convenient and flexible in application. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 yes Figure 1 Schematic diagram of the structure of the combined anti-stone ring;

[0017] Figure 3 yes Figure 2 Schematic diagram of the structure of the Chinese and foreign anti-stone rings;

[0018] Figure 4 yes Figure 2 A schematic diagram of the structure of the inner protective stone ring.

[0019] In the picture:

[0020] 1. Cutter ring; 2. Cutter arm; 3. Cutter bushing; 4. Cutter arm tooth assembly; 5. Cutter ring tooth assembly; 6. Combined anti-stone ring; 61. Outer anti-stone ring; 611. Outer ring mounting plate; 612. Outer ring outer ring; 613. Outer ring middle ring; 614. Outer ring inner ring; 615. Outer ring connecting rod; 616. Outer ring sleeve; 62. Inner anti-stone ring; 621. Inner ring mounting plate; 622. Inner ring outer ring; 623. Inner ring connecting rod; 624. Inner ring inner ring. Detailed Implementation

[0021] To further understand the invention content, features and effects of this utility model, the following embodiments are provided in detail.

[0022] Please see Figure 1The present invention relates to a reamer device with an anti-stone ring, comprising a reamer ring 1 and a reamer bushing 3. Multiple spiral reamer arms 2 are installed between the two at equal circumferential angles. Multiple blade ring tooth assemblies 5 are installed on the outer side of the reamer ring 1, and blade arm tooth assemblies 4 are installed on the side edges of each reamer arm 2. As shown in the figure, eight reamer arms 2 are provided. The inner end of each reamer arm 2 is welded and fixed to the reamer bushing 3, and the outer end of each reamer arm 2 is welded and fixed to the reamer ring 1.

[0023] Therefore, as Figure 1 As shown, the entire cutter head device has a cage-like structure. When the cutter head device rotates, the cutter ring tooth assembly 5 and the cutter arm tooth assembly 4 scrape the mud surface at the bottom of the water. The resulting gravel and mud pass through the cutter head device and enter the suction port of the rear mud discharge pipe to complete the dredging operation.

[0024] In this embodiment, the cutter ring tooth assembly 5 and the cutter arm tooth assembly 4 have the same structure. Specifically, the cutter ring tooth assembly 5 includes a tooth base and cutter teeth mounted on the tooth base, and the tooth base is welded to the cutter ring 1; the cutter arm tooth assembly 4 includes a tooth base and cutter teeth mounted on the tooth base, and the tooth base is welded to the cutter arm 2. The cutter teeth and their respective tooth bases are installed and fixed with countersunk screws, so that when the cutter teeth suffer from excessive wear and deformation, they can be easily replaced. The countersunk screw installation method can avoid the screws rubbing against the bottom mud surface during the operation of the cutter device, thus avoiding the problem of screw wear and falling off.

[0025] A combined anti-rock ring 6, consisting of an outer anti-rock ring 61 and an inner anti-rock ring 62, is installed inside the space on the inner side of each cutter arm 2. The inner anti-rock ring 62 is located inside the outer anti-rock ring 61. As shown in Figure 1, the combined anti-rock ring 6 also has a cage-like structure. During the operation of the cutter head device, the broken bottom mud enters the interior of the cutter head device through the space between adjacent cutter arms 2. The combined anti-rock ring 6 blocks oversized rocks from entering the outside, preventing excessively large rocks from entering the suction port at the rear and causing pump and pipe blockage problems.

[0026] Please see Figure 2 , Figure 3 and Figure 4 It can be seen that:

[0027] The outer anti-stone ring 61 includes an outer ring 612, an outer ring middle ring 613, and an outer ring inner ring 614. Each ring is connected as a whole by multiple outer ring connecting rods 615. Multiple outer ring mounting plates 611 are provided on the outside of the outer ring 612, and the outer ring mounting plates 611 are detachably connected to the cutter ring 1.

[0028] In this embodiment, the outer stone-proof ring 61 also includes an outer ring sleeve 616 located at the center. The inner diameter of the outer ring sleeve 616 is equal to the outer diameter of the auger bushing 3, and the outer ring sleeve 616 is fitted onto the auger bushing 3. Because the outer ring sleeve 616 is fitted onto the auger bushing 3, the outer stone-proof ring 61, after installation, has its overall structural strength enhanced due to the front part being combined with the auger bushing 3, thus improving its ability to resist the impact of stones and making it less prone to deformation.

[0029] In this embodiment, the outer end of the outer ring connecting rod 615 is welded to the outer outer ring 612, the middle part is welded to the middle outer ring 613 and the inner outer ring 614, and the inner end is welded to the outer ring sleeve 616. Furthermore, six outer ring connecting rods 615 are provided and are circumferentially spaced at equal angles.

[0030] In this embodiment, six outer ring mounting plates 611 are provided and are spaced at equal angular intervals around the perimeter. The inner edge of the outer ring mounting plate 611 is welded to the outer ring 612. The outer ring mounting plate 611 has connecting holes and is fixedly connected to the reamer ring 1 with bolts. Figure 3 As shown, each outer ring mounting plate 611 is located outside the outer end of each outer ring connecting rod 615.

[0031] The inner anti-stone ring 62 includes an outer inner ring 622 and an inner inner ring 624, and the two rings are connected as a whole by multiple inner ring connecting rods 623. Multiple inner ring mounting plates 621 are provided on the outside of the outer inner ring 622, and the inner ring mounting plates 621 are detachably connected to the cutter ring 1.

[0032] In this embodiment, the inner diameter of the inner ring 624 of the inner anti-stone ring 62 is equal to the outer diameter of the outer ring sleeve 616, and the inner ring 624 is fitted onto the outer ring sleeve 616. Because the inner ring 624 is fitted onto the outer ring sleeve 616, the overall structural strength of the inner anti-stone ring 62 is enhanced after installation due to the front part being combined with the outer ring sleeve 616 of the outer anti-stone ring 61. This improves the inner anti-stone ring 62's ability to resist the impact of stones and makes it less prone to deformation.

[0033] In this embodiment, the outer end of the inner ring connecting rod 623 is welded to the outer ring 622 of the inner ring, and the inner end is welded to the inner ring 624 of the inner ring. Furthermore, six inner ring connecting rods 623 are provided and are spaced at equal angular intervals around the circumference.

[0034] In this embodiment, six inner ring mounting plates 621 are provided and are spaced at equal angular intervals around the perimeter. The inner edge of the inner ring mounting plate 621 is welded to the outer inner ring 622. The inner ring mounting plate 621 has connecting holes and is fixedly connected to the reamer ring 1 with bolts. Figure 4 As shown, each inner ring mounting plate 621 is located outside the outer end of each inner ring connecting rod 623.

[0035] How to use:

[0036] When the cutter head is disassembled (meaning the cutter head is removed from the front end of the cutter suction dredger's boom), the outer rock-prevention ring 61 is installed first. Specifically, multiple bolts are used to fix each outer ring mounting plate 611 to the cutter ring 1. At this time, the outer ring sleeve 616 is fitted onto the cutter shaft sleeve 3. Then, the inner rock-prevention ring 62 is installed. Specifically, multiple bolts are used to fix each inner ring mounting plate 621 to the cutter ring 1. At this time, the inner ring 624 is fitted onto the outer ring sleeve 616. The cutter head is then installed at the front end of the cutter suction dredger's boom. When the cutter suction dredger is performing dredging operations, the mud at the bottom of the water passes through the space between adjacent cutter arms 2 and then through the combined rock-prevention ring 6, finally entering the suction port at the rear. During this process, the stones in the mud are trapped on the outside, avoiding pump and pipe blockage problems.

[0037] The aperture of the combined stone-blocking ring 6 is adjusted according to the on-site construction process. When only relatively small stones are allowed to pass through, the aperture of the combined stone-blocking ring 6 needs to be reduced. At this time, the relative positional relationship between the outer stone-blocking ring 61 and the inner stone-blocking ring 62 is as follows: Figure 3 As shown, the outer ring connecting rod 615 and the inner ring connecting rod 623 are spaced apart, and the through hole diameter on the outer anti-stone ring 61 is reduced to half of its original size. When relatively large stones are allowed to pass through, the through hole diameter of the combined anti-stone ring 6 needs to be increased. At this time, it is necessary to remove the bolts between the outer ring mounting plate 611 and the inner ring mounting plate 621 and the auger ring 1. After rotating the inner anti-stone ring 62 by 30°, the outer ring mounting plate 611 and the inner ring mounting plate 621 are fixedly connected to the auger ring 1 with bolts. At this time, the outer ring mounting plate 611 and the inner ring mounting plate 621 are stacked, and the stacked outer ring mounting plate 611 and the inner ring mounting plate 621 are fixedly connected to the auger ring 1 with the same bolt. The outer ring connecting rod 615 and the inner ring connecting rod 623 are also stacked, and the through hole diameter on the outer anti-stone ring 61 is restored to its original size.

Claims

1. A reamer device with a stone protection ring, comprising a reamer ring (1) and a reamer sleeve (3), between which a plurality of spiral reamer arms (2) arranged at equal angular intervals in the circumferential direction are installed, a plurality of cutter ring tooth assemblies (5) are installed on the outer side of the reamer ring (1), and a cutter arm tooth assembly (4) is installed on the side edge of each reamer arm (2); wherein: A combined stone prevention ring (6) consisting of an outer stone prevention ring (61) and an inner stone prevention ring (62) is installed in the space inside each reamer blade arm (2), wherein the inner stone prevention ring (62) is located inside the outer stone prevention ring (61); the outer stone prevention ring (61) comprises an outer ring outer ring (612), an outer ring middle ring (613) and an outer ring inner ring (614), and each ring is connected to form a whole by a plurality of outer ring connecting rods (615). A plurality of outer ring mounting plates (611) are provided on the outer side of the inner ring, and the outer ring mounting plates (611) are detachably connected to the reamer ring (1); the inner stone protection ring (62) comprises an inner ring outer ring (622) and an inner ring inner ring (624), and the two rings are connected as a whole using a plurality of inner ring connecting rods (623); a plurality of inner ring mounting plates (621) are provided on the outer side of the inner ring outer ring (622), and the inner ring mounting plates (621) are detachably connected to the reamer ring (1).

2. The reamer device with a stone protection ring according to claim 1, characterized in that: The outer stone protection ring (61) further comprises an outer ring sleeve (616) located at the center, the inner diameter of the outer ring sleeve (616) being equal to the outer diameter of the reamer shaft sleeve (3), and the outer ring sleeve (616) being sleeved on the reamer shaft sleeve (3); the inner diameter of the inner ring inner ring (624) of the inner stone protection ring (62) being equal to the outer diameter of the outer ring sleeve (616), and the inner ring inner ring (624) being sleeved on the outer ring sleeve (616).

3. The reamer device with a stone protection ring according to claim 2, characterized in that: The outer end of the outer ring connecting rod (615) is welded to the outer ring outer ring (612), the middle part is welded to the outer ring middle ring (613) and the outer ring inner ring (614), and the inner end is welded to the outer ring sleeve (616); the outer end of the inner ring connecting rod (623) is welded to the inner ring outer ring (622), and the inner end is welded to the inner ring inner ring (624).

4. The reamer device with a stone protection ring as claimed in claim 3, characterized in that: Six outer ring mounting plates (611) are provided and are arranged at equal angles in the circumferential direction. The inner edge of the outer ring mounting plate (611) is welded to the outer ring outer ring (612). The outer ring mounting plate (611) is provided with a connection hole and the outer ring mounting plate (611) is fixedly connected to the reamer ring (1) by bolts. Six inner ring mounting plates (621) are provided and are arranged at equal angles in the circumferential direction. The inner edge of the inner ring mounting plate (621) is welded to the inner ring outer ring (622). The inner ring mounting plate (621) is provided with a connection hole and the inner ring mounting plate (621) is fixedly connected to the reamer ring (1) by bolts.

5. The reamer device with a stone protection ring as claimed in claim 4, characterized in that: Six outer ring connecting rods (615) are provided and are arranged at equal angles in the circumferential direction; six inner ring connecting rods (623) are provided and are arranged at equal angles in the circumferential direction.

6. The reamer device with a stone protection ring according to claim 5, characterized in that: The cutter ring tooth assembly (5) comprises a tooth seat and cutter teeth mounted on the tooth seat, and the tooth seat is welded to the reamer ring (1); the cutter arm tooth assembly (4) comprises a tooth seat and cutter teeth mounted on the tooth seat, and the tooth seat is welded to the reamer arm (2).

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